Hi,

when a profile contains both python-numpy and python-matplotlib
(either installed directly or by propagation, e.g. when from
python-ipython), a lot of warnings about conflicts between
python-numpy and python-nympy-bootstrap appear, because matplotlib
propagates its python-numpy-bootstrap dependency.

This patch works around it by creating an intermediate
python-matplotlib-bootstrap package as well, which is then used as a
native input to generate the documentation of python-numpy.
python-numpy is then used as a propagated input of python-matplotlib,
so python-numpy-bootstrap doesn't appear in user's profiles anymore.

What do you think?

Thomas